Snowplow



J. V. MARYLAND sNlowPLow. APPLICATION r|LEDmAR.1s,192o. 1,396,377, Patented N0v.8,1921.

4" 3 SHEETS-SHEET 1.

/N VEN T01? A TTOHWEYS 1. V. MARYLAND SNOWPLOW.

APPLICATION FILED IIAR. I8, |920.

3 SHEETS-SHEET 2.

/1 TTOIM/EYS Patented Nov. 8, 1921 SHEETS-SHEET 3.

lPatented Nov. 8, 1921.

I. V. MARYLAND SNOWPLOW.

APPLICATION FILED IIIAR, I8, |920.

A TTU/MHS w 5 I l W/TNESSES .i sa

UNITED STATES PATENT OFFICE.V

JACOB VICTOR MARYLAND, 0F VIRGINIA., MINNESOTA. Y

Patented Nov. s, 1921..

SNOWPLDW.

1,396,37 7, Specification of Letters Patent.

Application led March 18, 1920. Serial No. 386,785.

To'all whom t ma/z/ concer/ft:

Be it known that I, JACOB VICTOR MARY- LAND, a citizen of the United States, and a resident of Virginia, in the county of St. Louis and State of Minnesota,- have invented certain new and useful Improvements in Snowplows, of which the followin is a specification.

Iy inventionis an improvement in snow plows, and has/` for its object to provide a. device of the character specified adapted to be connected to the front vof a motor vehicle and to be operated thereby, wherein mechanism is provided for steering the plow to permit it to follow turns in the road without Y strain on the plow and the motive power.

In the drawings:

Figure 1 is a top plan view of the improved plow;

Figs. 2, 3 and 4 are sections on the lines 2 2, 3 3 and 4 4, respectively, of Fig. 1;

Fig. 5 is a sectional view through one of the runners, showing the mounting of the same;

Figs. 6 and 7 are sections on the lines 6-6 and 7-7, respectively, of Fig. 5.

In the present embodiment of the invention the improved plow clomprises a pair of similar wings or moldboards 1 which are rigidly connected at their forward ends, and, referring to Figs. 2, 3 and 4,' it will be seen that these moldboards or wings are curvedtransversely and arranged with their concave faces outwardly. The curve i`s such, and they diverge lfrom each other rearwardly at such an angle, that the snow will slide smoothly along the outer faces of the wings without bunching, and they are curved over suiiiciently at the top, as shown more especially in Figs. 2 and 3, to prevent the snow from flying over the top on to the propelling power` behind, in the event that the plow should be operated at a rapid speed.

Near their ends the wings are connected by angle plates 2 and 3, ythere being provided three' plates of each series 2 vand 3, two arranged near the top of the wings and one near the bottom. The angle plates at the top are oppositely arranged, as shown in Fig. 4, in spaced relation. and each pair of angle plates 2 carries, a nut 5, which is journaled in bearing arms 6 secured to the angle platesr ofthe pair. These nuts, as shown in Fig. 5, have their ends reduced,

to engage openings in the bearing plates and each nut has rigid therewith a wheel 7 for turning the same.

A shaft 8 is supported by the nut 5 at the front of the wings and by a bearing arm 6 on the lower angle bar 2, this shaft 8 having threaded engagement with the nut.

Similar shafts 9 are supported by the nuts 5 at the rear of the wings, and by the lower angle bar 3, and each of these shafts 9 has at its upper end a radial arm 10. The shaft 8 has at its upper end a pair of arms 11 extending at approximately a yright angle with respect to each other, each of the arms 11 being connected by a link 12 with the arm 10 of the adjacent shaft 9.

A shoe or runner 13 is carried by each shaft 8 and 9. These runners are similar, each consisting of a sheet of metal of suitabie weight having its ends upturned as shown and curved transversely and arranged with its concavity downward, and each' shoe carries intermediate its ends a bea-ring lug 14. Each of these lugs 14 is received between a pair of lugs 15 on the lower end of the adjacent shaft or post 8 or 9, as the case may be, the lugs being pivotally connected, as shown, to perm1t the shoe or rocker to swing on an axistransverse to the direction of motion of the plow.

The link connection 12 between the shafts 8 and 9 constrains them to move together, and the concave surface offthe runner prevents lateral slip of the plow when turning. Mechanism is provided for connecting the plow to the front of a motor. vehicle, indicated at 16. The connection is through the angle bar 4. This bar has near each end hinge lugs 17 which receive between them the forward ends of the side members 18 of .a connecting frame consisting of said side members and inclined braces 19.

The said forward ends of the side members are pivoted to the hinge lugs and at their rear ends the side members are pivoted between the arms 20 of yokes, whose bodies 21 are clipped to the front ends of the springs, by means of clips indicated at 22. Both of these hinge connections at the hinge leaves 17 and at the yoke 21 are horizontal and transverse to the direction of motion of the plow so that the plow may move freely vertically with respect to the vehicle. fMechanism is lprovided for permitting the plow to be steered from the drivers seat of the vehicle. The said mechanism consists of a radialarm 23 on one of the shafts 9, which has at its outer end a series of openings, as shown in Fig. l. A link, consistin of sections 24 and 245, connects thisl arm wit the connecting rod 26 which .connects then steering wheel with the steering knuckle of the vehicle. The sections 24 and 25 of the link are connected by a ball and socket joint 27, to permit free movement-of thel plow with respect to the vehicle.. v f

. obstacles on the road, and a brace 29 connects this up-curved point to the front of the plow, This upturned point 28 is provided with an opening 30 for engagement by draft apparatus to pull the plow when necessary. The improved plow can be either pushed or pulled, butit is primarily constructed for use with motor trucks or tractors.

In operation, when pushed, the partsare arranged as shown in Fig. l. From the drivers seat he may steer the plow as well as the vehicle. The snow glides up the concave faces of the wings and moves rearwardly, being deposited at each side of the track formed by the plow. lf it is desired to V'pull the plow, draft apparatus is connectedwith the opening 30 ofthe turned up point of the plow.

I claim:

1. A snow plow comprising a pair of wings or shares meeting at an acute angle, and curved to smoothly deflect the snow to 4either side, a -rigid connection between the said w1ngs means for connectin f sald plowto a motor vehicle to permitt e plow to move freely vertically with respect to tle vehicle, steering devices for the plow, and

means for controlling said devices from the motor vehicle, said steering devices comprising ,shoes curved transversely and arof said plow, a vertical shaft rotatably mounted on the connections at the forward end, a pair of vertical shafts rotatably mounted on the rigid connection at the rear, guiding shoescarried at the lower end ofthe vertical shafts, crank arms carried by said shafts, links. connecting said crank arms, and common controlling means for said shafts.

3. A snow plow comprising a pair ofy wings, a rigid connection between said wings including sspaced angle plates, bearing arms carried byy said angle plates,

nuts journaled insaid bearing arms, vertical shafts, each havinga threaded portion'operatively engaged with a nut, a guide shoe, means for pivotall'y mounting the guide shoe on the lower end of said shaft including a lug carried by the shaft, and a pair of lugs carried by the guide shoe and embracing and pivotally secured to the lug of the shaft, and means for controlling said shaft including an arm carried. by 4the upper end thereof.

4. snow' plow comprising a pair of wings, rigidconnections between said wings, verticalshafts rotatably journaled on said rigid connections, means for constraining said shafts to corresponding motion, guide,

shoes, and means for pivotally connecting said guide shoes to saidshafts. Y

'JAooB vieron MARYLAND. 

